NAME¶

mmgrab - Pin a struct mm_struct.

SYNOPSIS¶

void mmgrab(struct mm_struct * mm);

ARGUMENTS¶

mm

DESCRIPTION¶

Make sure that mm will not get freed even after the owning task exits. This doesn't guarantee that the associated address space will still exist later on and mmget_not_zero has to be used before accessing it.

This is a preferred way to to pin mm for a longer/unbounded amount of time.

Use mmdrop to release the reference acquired by mmgrab.

See also <Documentation/vm/active_mm.txt> for an in-depth explanation of mm_struct.mm_count vs mm_struct.mm_users.

COPYRIGHT¶